19804976

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{2521}}^1$

素因数の和:3020

約数の個数: 20

約数和(自身を含む): 38465544

約数和(自身を除く): 18660568

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 2521, 3928, 5042, 7856, 10084, 20168, 40336, 1237811, 2475622, 4951244, 9902488, 19804976]

約数ペア:

[(1, 19804976), (2, 9902488), (4, 4951244), (8, 2475622), (16, 1237811), (491, 40336), (982, 20168), (1964, 10084), (2521, 7856), (3928, 5042)]